Good news for RedHat 9 users. The latest RedHat 8.0 release (20030408) of Wine runs under RedHat Linux 9.
What is Wine?Download (wine-20030408-1rh8winehq)
Wine is an Open Source implementation of the Windows API on top of X and Unix.
Think of Wine as a Windows compatibility layer. Wine does not require Microsoft Windows, as it is a completely alternative implementation consisting of 100% Microsoft-free code, but it can optionally use native system DLLs if they are available.